What do we learn from this conversation？
A. John Smith can't come to the phone right now.
B. John Smith isn't in right now.
C. The caller dialed the wrong number.
查看答案
互联网上的一台主机如果使用C类地址202.93.120.255作为数据报的目的IP地址，那么这个数据报将同时发送到______网络上的所有主机。
A. 202.93.120.0
B. 202.0.120.0
C. 202.0.0.0
D. 202.93.0.0
Where does this conversation most likely take place？
A. In a bookstore.
B. In a library.
C. In a classroom.
Why was Henry Ford able to sell millions of cars？
A. He produced different models so that people chose what they liked.
Buyers were wealthy enough to buy expensive cars.
C. He produced the same type of cars in large quantities.
Where is the talk taking place？
A. On the phone.
B. At the booking office.
C. At the airport.
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